The sample in the Pew poll of registered voters was 34R/33D/30I, which seems reasonable.

After screening out respondents who are unlikely to vote, Pew was left with a sample of likely voters that was R+3, according to Chuck Todd. (Update: According to page 14 of this report, the Likely Voter sample was 36R/33D/30I.)

If the sample in the Pew poll is skewed toward Republicans, it probably is not off by much. A month ago, Rasmussen reported a 2-point edge for Republicans in party ID. In Wisconsin’s recall election a few months ago, the partisan breakdown was R+1, according to exit polls. Party ID was tied 35-35 in 2010.

But we’re glad to see liberals acknowledge that polls can be skewed and that it is possible for a sample to over-represent members of one party or the other. Maybe Obama supporters won’t call us insane the next time we question a D+13 sample.

Correction: A previous version of this post described Washington Times columnist Henry D’Andrea as a liberal. We apologize for the error!